This was the last shmup from the developer to use the Tonyo System engine. Expect cameo appearances from obligatory mid and end level bosses. The screen size is particularly small for a shooter, measuring 400 pixels high and 300 pixels wide. Barely enough room to maneuver around bullets. Fortunately your ship is equipped with a few smart bombs, useful in situations such as these. The left shift and control keys are assigned as the primary and secondary shot buttons. Pressing space will bring you back to the main menu even when you're playing. There's a hidden difficulty that isn't displayed on the screen and is called "Doom" or something. Usually the game has a bright purple background around the game screen.